Adjustable cheek riser



FIG. 1 is a perspective view of an adjustable cheek riser showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is another perspective view thereof.

The broken lines illustrate portions of the drawings that form no part of the claimed design. 

CLAIM The ornamental design for an adjustable cheek riser, as shown and described. 